SDM845 DPU hardware is rev 4.0.0 per hardware documents.
Original patch to enable wide_bus operation did not take into account
the SDM845 and it got carried over by accident.
- Incorrect setting caused inoperable DisplayPort.
- Corrected by separating SDM845 into its own descriptor.
Fixes: c7c412202623 ("drm/msm/dp: enable widebus on all relevant chipsets")
Signed-off-by: James A. MacInnes <james.a.macin...@gmail.com>
---
drivers/gpu/drm/msm/dp/dp_display.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
b/drivers/gpu/drm/msm/dp/dp_display.c
index aff51bb973eb..e30cccd63910 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -126,6 +126,11 @@ static const struct msm_dp_desc msm_dp_desc_sa8775p[] = {
{}
};
+static const struct msm_dp_desc msm_dp_desc_sdm845[] = {
+ { .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0 },
+ {}
+};
+
static const struct msm_dp_desc msm_dp_desc_sc7180[] = {
{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0,
.wide_bus_supported = true },
{}
@@ -178,7 +183,7 @@ static const struct of_device_id msm_dp_dt_match[] = {
{ .compatible = "qcom,sc8180x-edp", .data = &msm_dp_desc_sc8180x },
{ .compatible = "qcom,sc8280xp-dp", .data = &msm_dp_desc_sc8280xp },
{ .compatible = "qcom,sc8280xp-edp", .data = &msm_dp_desc_sc8280xp },
- { .compatible = "qcom,sdm845-dp", .data = &msm_dp_desc_sc7180 },
+ { .compatible = "qcom,sdm845-dp", .data = &msm_dp_desc_sdm845 },
{ .compatible = "qcom,sm8350-dp", .data = &msm_dp_desc_sc7180 },
{ .compatible = "qcom,sm8650-dp", .data = &msm_dp_desc_sm8650 },
{ .compatible = "qcom,x1e80100-dp", .data = &msm_dp_desc_x1e80100 },
--
2.43.0
